1. The probability of having a boy is 0.51.																	
What is the probability that among 5 consecutive children there will be:																	
a) just 3 girls																	
																	
																	
																	
b) maximum 3 boys											d) at least 3 boys						
																	
																	
																	
c) just 3 boys																	
											"E(X) = n*p = 5*0,51="				2.55		
											"D(X) = n*p*(1-p) = 5*0,51*0,49="						1.2495
																	
2. The probability of success (hitting the basket) is 0.7. We have 6 attempts.																	
What is the probability of hitting the basket:																	
a) just 6x?																	
																	
																	
b) maxium 5x?											"E(X)=6*0,7"						
											"D(X)=6*0,7*0,3"						
																	
c) less than 3x?																	
																	
																	
																	
3. The number of telephone connections to the rescue system is an average of 2 calls per 20 minutes.														2h …20min			at=2
a) What is the probability that the system receives 6 calls in 30 minutes?																	
																	
																	
																	
b) no more than 6 calls per hour?																	
																	
																	
c) at least 1 call per 40 minutes?																	
																	
																	
														E(X) = D(X)= 2			
																	
																	
																	
4. There are 4 defective products per 100 products.											at= 4						
What is the probability that they will:																	
a) 2 defective products in 100 products?																	
																	
																	
																	
b) 4 defective products in 200 products?																	
																	
																	
																	
c) no more than 2 defective products in 50 products?